WorldCat

Description:
WorldCat is the world's largest network of library content and services- allowing users to search for bibliographic records in the collections of libraries around the world. Users can search for physical items such as popular books, music CDs and videos, as well as digital content such as downloadable audiobooks and electronic books. In addition, users can find article citations with links to full-text authoritative research materials such as documents and photographs of local or historic significance and digital versions of rare items that aren't available to the public.